If the price is cheap what do you expect it's a tough pass spend money to build well every drill bit wasn't straight they all rocked I will keep them and use them in outdoor projects where the finishing is not that important.
Pros
1/4" hex shank drill, 5 cutting edges, made of HSS, 6 different diameters: 6 mm (1/4"), 8 mm (5/16"), 9 mm (3/8"), 12 mm (1). /2"), 16mm(5/8"), 19mm(3/4"), Used for 90 degree installation 6 different size holes in wood and PVC panels Countersunk head screws and fasteners.